Technical data

Serial Bus Decoding & Triggering, Search & Navigation, and Segmented Acquisition Labs 4
4000 X-Series Oscilloscopes Advanced Training Guide 145
7 Press [Serial] on the front panel of the scope.
8 In the Mode menu, select MIL-STD-1553.
9 In the Signals menu, set High Threshold to +1.0 V and Low Threshold to
-1.0 V. These determine how high or low a signal needs to go to qualify
for logic levels. In a true MIL- STD- 1553 signal, the signal voltages are
set between +9 V and +14 V, but for this example signal, they are only
+2.5 V. MIL- STD- 1553 protocol suggests a range of 3- 6 V. Set your
thresholds on true signals accordingly.
You should now see MIL- STD- 1553 serial information being actively
decoded on the bottom of the waveform, as in Figure 99. Agilent's
hardware based decoding allows for extremely fast update and decode
rates, allowing you to read the information as it passes along the screen.
Next, let's set up a trigger point, as we are still triggering on random
rising edges.
Figure 98 Random edge triggering on MIL-STD-1553 traffic.